Chair iron



'Jime24, 1930. H. w. BOLENS 1,767,166

' CHAIR IRON Filed Feb. '11, 1929 2 Sheets-Sheet 1 7L L #5 Y 1 v g I await/f June 24, 1930. H. w. BOLENS 1,767,166

- CHAIR IRON Filed Feb. 11, 1929 2 Sheets-Sheet 2 MW a w d woea/gd /%//yfl,60//@ Patented June 24, 1930 BARRY??? 338 o r naissance;mama- '1 This inventionjrelates to chair irons.

I Objects of this invention are; to provide a novel form of chain ironin which the; parts are formed from pressed metal, in whichlno casingsare employed, and in which the spider arnis, saddle and springplateare integral', a a 1 Further objects areito provide'a chair iron in'whicha sheet Ineta l'yoke is providedand 0 "formed of two members, with spaced-bearing points for the snindleandyoke, and with the parts of the yoke, and: interlocked and held indnterlocked relation by: the riveted 'spindle.

Further objects are to i provide "a novel fo1'm of construction in which the limiting means for limiting theswinging of the spider,

and consequently, of the seat of the chair,- is

obtained by strikingout portions of the sheet metal members so that no additional fasten- ,go .ers,;stops, or other members of this type are required? H 1 i 1 w j I Further; objects are to provide a novel form ref-chair iron construction of sheet metaland so madeithat the fspider may-he. either-a; two

5 orsi'xarm spiden; 1 a a a 1 Further ob]e'ct s1 are to; provide a construction in which no rivetlng-jis-required for the spider arms, saddle or spring plate, and in which Taivery simple, cheaply produ'cldand highly practical structure is provided.

1 5 An gemhodimentof thewinvientionis shown -:in.the accompanying drawings, in which E ;;Figure '1" is an elongated sectional view a through thechair iron, such jview being taken as-on theline 14-1 of l i, "ure,-2.v Y E'gure 2 is a view from the underside 01': the chair iron,with partsbroken away and injsection; a i i I Figure 3 is an elongated sectional, View 4 showing a portion of the structure.

= Figure-d is a transverseg sect-ional View, suchview being taken on line inFigurex3." i

"01mm ma ix; iicatioma ed re mar .11, iezaiseriairacemes, i

T Referring to the drawings'rit will be seen thatthe device comprises a sheet metal spider having a p air of longitudinally extending substantially verticalarrns 1. H These arms arevjoined by antintegral plate 2 andprei' N59 I erably' by afspac'ed bearmgn ernberfor plate 3. The plate 2 is providedwith an outwardly extending tongue 4, which is, bent down; asin'dicated in'Figure I. ;This tongue bears against a; pair of'lngsor projections 5', which v 5 5 are, struck inwardly from the verticalz side walls 7 vof the spider; The 2' spider continues downwardly Jae-indicated inidott'ed lines 6 in Figure 1,;:to form a saddle; which is pivotally ;j oined to the;yoke,- as willhereinafterappear. 110 p The plate -is aperturedl-a-s indicated at 7 for: the passage of the spring rod indicated atdottedqlines 8-152. g Ita-is to be noted alsoithatithe spider is rovided with: outwardly i turned terminal lugs 9 which are; apertured for, the reception of-screws byrineans oi which the seatofithe chairmayibe-attached.i ,x

7 It is also to be notedthat ifdesired the spiderinayf have sixprojecting arms instead 30f four,*vasyth11s ia-r described. These additional arms; are L formed by 'chanel-shaped vmembers 10,- which are providedwith flanges -11, riveted asindicated at'12,'to the arms 1 of-the spider. FM e 9: :7 :Alsor' it isyto, b'emote'dgthat the pivot bolt or pintle pin Z 13 passes through the flanges 'll and' through the spider-arms 1, and thus additionally secures the .arms, 10in place.

Thus itlis not necessary to alter the design {180 of the structure of the "device Lin" order to make. it a four-arm or six-arm 1 spider,

The yoke-is formedof .a pair of vertlcal arms or plates 14:,v provided with an; integral transverse base 15. In addition to this, 35

the yoke is also formed of a transversevupper plate 16, which-is provided with integral,

. a e cvertioal,--downwardly .extending walls iior Figure. 5 1s anjenlarged sectional VieWlf members] 17, and with integral, upstanding walls," or plates 18 preferably reinforcedby means of side webs 18, as shown in Figure 1.

These side webs 18 are integrally formed with the plate 18 and are turned forwardly so that their bottom edges rest upon the trans verse plate 16, as may be seen from Figures 1 and 2.

This plate 18 is also apertured, as indicated at 19, for the passage therethrough of the spring bolt or rod 8. The aperture 19 may be of suflicientsize to permit the free shifting or rocking of the rod on bolt 8 when the chair is rocked. A spring 20, loosely surrounds the rod 8 and bears atone end against a washer 21 carried by the rod, and at the other end, against the spring plate 4, the.

, spring plate 4 being reinforced againstrearwardly motion by means of the lugs 5. The adjusting nut 22 of the spring bolt or rod bears againstthe rear :face .ofjthe wall or 7 plate 18 of the yoke.

' It is to be noted that no rivets are used in securing the two parts or'tlne yoke together. Instead, the transverse bottom plate 15 of the yoke is apertured forthe receptionof a plurality of lugs 23,- integrally formed at the lower edge of the side plates 17 or the upper yokemember.

The threaded spindle 24 is shouldered and hasa reduced portion 25 passing through the plates 15 and 16 and riveted-at its upper end. This construction secures spaced bearing points for the spindle and yoke, as is apparent from Figure l. 7 Further, the riveting of this spindle holds the parts of the yoke interlocked and thus avoids the use of any of the ordinary securing means.

The sideplates 1 1 of the yokeare provided with outwardly struck orbulged portions 26 (see Figures 1 and 5 which fit within outwardly bulged portions 27 of the side arms 1 ofthe spider. This construction, as is apparent from Figures 1, 3 and 5, limits the rocking motion of-thefchair and'provides positive stops therefor." r 7 'It is to be noted particularly that theconstruction is such that all of theparts of the chair iron may be formed from pressed sheet metal with the utmost cheapness- Further, it is to be notedthat the assembling of the device is most easily accomplishedand that a minimum amount of work is required.

The construction of the device is such that maximum strength and minimum weight are o tained. J I

Although the invention has been described in considerable detail such description is intended as illustrative rather thanlimiting, as theinvention may be variously embodied and as the scope of such invention is to be determined as claimed. Y

I claim:

1. A chair iron comprising a spindle, a

- sheeet metal yoke formed of an upper part per and lower parts and riveted in place and ofsaid parts having upwardly extending arms, a spider pivoted tosaid arms, the upper or said parts having an' upwardly extending plate apertured for the reception of a spring bolt, said upwardly extending plate havingrearwardlyi'projecting. integral webs.

3. A chair iron comprising a yoke formed of an'upper part and a' lower part having interlocking portions, means for holding said portions in interlocked relation, upwardly extending arms on the lower part, a spider pivoted to said arms, and an upwardly extending'plate on the lower part having an aperture for the reception of a spring bolt.

4. A chair ironincluding a yoke formed of'an upper part anda lower part having interlocking portions, means for holding said portions in interlocked relation, upwardly extending arms on the lower part, a spider pivoted to said arms, a depending apertured plate on said spider, an upwardlyextending arms, a plate connecting said arms at their 1 upper edges, an apertured tongue extending downw'ardlyfrom one edge of said plate and positioned between said arms, channel shaped arms havingtheir inner ends secured to the outer races of the vertical arms intermediate their ends'whereby'the channel arms are disposed between the side edges of the plate;

6.'Afchair iron comprisingma spindle, a

sheet metal yoke rorme'dof upper and lower members having interlocking portions, said spindle passing through said upper and lower 'members and being'rlvet-ed in place to secure said" members together, one of said members having upwardly extending arms, the;

other of said members having an upwardly 1 extending plate apertured for the reception said arms; v

7. A chair iron comprising-asheet metal yoke formed of'upper and lower members having interlocked portions, "said spindle passing through said members and being riveted in place to secure said portions in interof a spring bolt, and a spider pivoted 'to locking relation, one of said members having I upwardly extending arms, the other of said members having an upwardly extending plate apertured for reception of a spring bolt, said upwardly extending plate having 7 rearwardly projecting integral reenforoing Webs, and a spider pivoted to said arms.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of 10 Wisconsin.

- HARRY W.l BoLE s. 

